Sega Genesis games on Linux?

There are several articles stating that there is a Sega Genesis Classic pack on Steam that has Linux support. However, when i look it up on Steam, it shows support only for Windows. Am I looking at this wrong or are they planning on releasing it for Linux at some future time. The articles state that you can get it already on Linux but I am unable to get a Linux version. Maybe the emulator is actually linux wrapper or something similar. The package is list at $29.99 or roughly $30 for 50 plus classic games that was released on the Sega Genesis. It would be great if this package will have a Linux version, and I would be a buyer. So far, I am not seeing the Linux part of it listed yet. I will keep my eye on this package waiting to jump on a linux version.